KNX R4 16 A | KNX R8 16 A

Actuator with Potential-Free Switching Outputs

The potential-free outputs of the Actuators KNX R4 16 A and KNX R8 16 A switch consumer loads up to 16 Ampere.

Time functions such as an on/off delay or a staircase lighting function can be configured in the devices applications. Linking with AND or OR is also possible.


N° 70571 KNX R4 16 A, 4 switching outputs
N° 70570 KNX R8 16 A, 8 switching outputs

  • Free of potential relay output for consumer loads with up to 16 A.
    KNX R4 16 A: 4 individually controllable outputs.
    KNX R8 16 A: 8 individually controllable outputs.
  • Timer functions: on and/or off delay, staircase lighting timer switch with adjustable prewarning (light blinks prior to switch-off)

  Configuration is made using the KNX software ETS 5.

Housing Plastic
Colour White
Assembly Series installation on mounting rail
Protection category IP 20
Ambient temperature Operation -20…+70°C, storage -55…+90°C
Ambient humidity max. 95% RH, avoid condensation
Operating voltage KNX bus voltage
Current at the bus operation without relay activity: 15 mA.
For permanent relay switching operations up to 30 mA
Output load capacity • 16 A with alternating voltage, maximum 250 V AC
• 5 A with direct current 30 V DC
• UL approval up to 10 A
• Cable cross section 1.5 mm² to 2.5 mm²
Data output KNX +/- bus connector terminal
BCU type Integrated microcontroller
PEI type 0
Group addresses max. 254
Assignments max. 254

KNX R4 16 A (70571):

Dimensions approx. 53 x 88 x 60 (W x H x D, mm), 3 modules
Weight approx. 150 g
Outputs 4 × output, free of potential,
each power supply U
Communication objects 37

KNX R8 16 A (70570):

Dimensions approx. 107 x 88 x 60 (W x H x D, mm), 6 modules
Weight approx. 270 g
Outputs 8 × output, free of potential,
each power supply U
Communication objects 73